10 Best Electric Water Heaters 2025 in the United States

The EcoSmart ECO 11 is a compact, tankless electric water heater designed to provide endless hot water on demand, making it a great choice for smaller applications like a single bathroom, office sink, or breakroom. Its 13 kW power supports a flow rate of 1.3 to 3.1 gallons per minute, which means it can supply enough hot water for low-flow needs but might struggle if you want to run multiple showers or large appliances at once. One of its biggest strengths is energy efficiency—it only heats water when you use it, saving you money compared to traditional tank heaters that keep water hot all day. The product is also very small, about 11.5 x 8 x 3.75 inches, and can be mounted on a wall or near the point of use, saving valuable space in tight areas. It has a user-friendly LED display to help you control water temperature within 1 degree, ensuring consistent performance.

The BOSCH Electric Mini-Tank Water Heater Tronic 3000 T 4-Gallon offers a compact and efficient solution for immediate hot water needs. With a 4-gallon capacity, it's ideal for small spaces like under-sink installations. Its 98% thermal efficiency ensures minimal energy waste, making it a cost-effective choice. The heater’s fast recovery rate is beneficial, providing quick access to hot water, and can supply up to two sinks simultaneously.

The Westinghouse 27kW tankless electric water heater is a strong choice for homeowners needing unlimited hot water throughout the house. With a flow rate of up to 6.26 gallons per minute, it can comfortably supply two bathrooms plus appliances like dishwashers or washers at the same time, reducing wait times and temperature dips. Its 27kW power ensures fast heating, making it suitable for whole-house use, though it requires a robust electrical setup (three 40 Amp breakers and proper wiring), which might mean higher installation costs if your current panel doesn’t support it.